CVE-2017-18892

Aliases:GHSA-wj5w-qghh-gvqpGO-2026-4317
Advisory lineage Upstream: 0 Downstream: 1
Modified
Published: 19 Jun 2020, 18:08
Last modified:05 Aug 2024, 21:37

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
v3.1 (nvd)
EPSS Score
0.24% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Jun 2020, 18:08
Published
Vulnerability first disclosed
05 Aug 2024, 21:37
Last Modified
Vulnerability information updated

Description

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which HTML content is not neutralized.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.24%• Percentile: 48%

Techniques & Countermeasures

  • CWE-116•Improper Encoding or Escaping of Output

    The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

Affected Systems

  • github.com/mattermost•mattermost-server

    ≥ 4.2.0-rc1+incompatible, < 4.2.0+incompatible | < 4.0.5 | ≥ 4.1.0, < 4.1.1 | ≥ 4.2.0-rc1, < 4.2.0

  • mattermost•mattermost_server

    < 4.0.5 | ≥ 4.1.0, < 4.1.1 | 4.2.0:rc1 | 4.2.0:rc2 | 4.2.0:rc3 | 4.2.0:rc4

References (8)